Foot-stock.



FOOT-STOCK.

Specification of Letters Patent.

Patented Sept. 24, 1907.

Application filed September 8,1905. Serial No. 277,558.

To all whom it muy concern:

lw it known that we, lnxn'r M. W. lLixsoN, a citizen of Sweden, and Anrnen l5. Tnrwrln, n citizen of th'- l' itml Snnos, both residing ai. Hartford, in the county of Hartford and Stute ol' Connecticut, have jointly invented certain new und useful improvements in Foot-Stocks, of which the following is a specification.

This invention relates to loot-stocks, generally and more especially ter that. class of said devices employed with various metal-reducing machines, particularly maehincs for grinding barbl or shafts to true Cylindrical form4 In this work iL is necessary to provide. for expansion o the sterk due te the generation of heat in the grinding process, and this expansion and consequent .-longation takes place although the stock under operation is flooded with water, and unless taken up or romperse-ated for will cause unnecessary binding and eoueeqnent friction at the point, where the centers engage said steek. In these machines the work is supe ported at itel ends by the centers and is rotated upon thorn, und consequently a constant, regulable bearingpressure is neeeary in order that the stock unity be properly supported and thus held from wnhhlng or irregular rotative movement.

With the und mentioned in `View the prineilml ohiee oi the invention is the provision of means for keeping ythe spring against which thu :entei'-vn1iyir1g sleeve bears under constant tension, while nt the sanno time permitting ofthe ready nfljtmtment. ol' said slee-Ye of ward and l'rom the work.

A further ohjeet ol' the invention is the provision oi improvements in confine-tional :lentils of fin: moc-han ism for adjust int; und l'or relrurrting tinl (tenter.

Uther ohjf-r'ts ol the invention will In: lmrl-inul'ter Het, forth.

In tluuvrornpnnyingr drawings, Figure l in ai trannvoree verivnl Lor-lion of tho [ruine ol' u metal-grueling or rerlnringfnnwhinv, looking toward ille inno; und o the loot-Stork, whieh appears in elevation. l"if;. 2 is n longindinol verte-ul section on line 2v2 oi Fig. fi; und Fig, I. is n transverse,- veriical section on the lino of tin,- slnn't for actuating the center-carrying eleeve.

Lilo; munt-ride designate similar parts throughout, the revend vions. i

wien-ing to the drawings, the numeral 1 designutes ilu' nlwhinehod upon ways of which is mounted for sliding movement 9. carriage 2 carrying the head und foot-stocke. In the lrcsent drawings, the howl-stock is not shown, for the invention relates :solely to the' foot-stonk und to the parte carried thereby.

Designated hy 3 ie the improved foot-etor-k, which is provided with a tiet huso 'l toA [it thetruneated top 2 of the arriage and with overlianging side-pieces 5 which hear against the inclined sides 6 of said carriage. A curved arm 7 projects from the foot-stock and overhangs an extension 22 of the base 2'thereof and said arm is bored to receive a sleeve 8 chambered 1t one end at; 9, and in which chamber is mounted a eener l@ having a. conical shank l0 ,and a reduced inner end 162.

Upon a reduced extension 7 of the arm 7 is threaded a chambered retaningmap 11 perforated at its outer end `to receive the smooth part; 12 of a screw 12, said screw hving s. reduced extension 12 which bears against the end 102 of the center l0, and carrying on its outer end aimurled manipulating knob 13. At its inner end the sieeve 8 is reduced at 8', and upon this reduced end is fitted one extremity of a, helical spring 14. On its inner wall the cap 11 is internlly threaded ut 15, and this thread is of the sanne lend as the screw l2 for a purpose hereinafter described. Working in the internal thread l5 of the cap is an externally-Unveiled, eirculr plug 16 slotted to receive n key 17, said key fitting a longitudinal spline or groove i8 in the screw 12.

On ihe Senter-carrying sleeve B is a niek lit, and in mesh with said nick ie o. pinion 2t) carried by a :allait 2l mounted in n bore 22 of the arm 7. This shaft. is provided with a. series of collare 21', and it in prevented from longitudinal movement by '.f. rserew 23 ilireudod into the drm, und the point oi' wiiieh iii# between two ei said cellars, as shown in Fig. 15. Ar, iwouer end the shaft, ie journulod in u split-henriog 2li. :md eau-ries u handle 25, will hearing heine, ehnnped npon ihn elml't iiy u 'lover-screw 24 to lor-k lin! enano :und hold the sleeve varrying the cent1-r in rl-lrm'tml position when desired. ln u. projection 2li ol the nrln 7 is orlned u :dot 27 l'or the rt'rr-ption ol' n tool (not shown) for droegeingr the grmlingwlnrols; :L tlnnnh-sr'rew 2H serving to #lmnp Suid tool in plnr'e..

Designated hy 2U the wsu-.rl cross-slide und on this is mounted it hond 30 having n hearing 3l lor the shaft ol' the rl'dneir|g-tool.

A gourd .112 ior protecting the joints between the foot. stock, carriage und bed is illustrated in Fig. l, auf sweiured by screws 33 to the extension 2''. For :mijns-tabl y securing ihn ioni-sleek in the carriage muy desired :nouns muy he, employvdfund l lewe shown in Fig. 1* un eecentrie Hlm-ft ift, nnnlnted in u tntnnverso horn .'55 ol the ntofk, and vdrrying'n handle fili. Il yoke-rod is 100 lttml :it its upper end 'over the eccentrh: inn-t ol snid evt-entri(windt, und the stern of the yoke in threaded to .receive e. T'nut 37 working in the nen-til T-slot 38 ol' the carriage.

In the oporntion ol' the invention when it. in desirable 105 tu udlunt, the venLer-rerrying `sleeve S this is readily-necompiishod by turning the 'rod l2, and as said rod engages the thread for its reception in the sleeve, suid slet-ve will be advanced or retracted as Circumstances may require. When the screw turns the plug i6 turns with it wml consoquontly by engagement with the internati thread i5 of tho trap moves longitudinally with relation to the screw, and as the leads oi tin` threads of tht- Shrew-plug, sletve und cap are the same, it follows tlnil no Compression oi tho spring will take place, and tlnu it will nlw-.iys act with constant tension against the t-nd oi' the sleeve 8, thus always forcing` forward the cenit-r with suliirient tort-e to insure firmness of sup port without hinding, and without, as is usually the mso, unmt'esstniiy crowding the Center into its roceivinwsoeltot in iht end oi tho workA AS the plug is provided with u. key fitting,r iu a spline or groove of the www, sind screw is free to move longitudinally through the plugl whiio turning oi' the .st-row utlvanees the sleeve Si und the plug ii)y ui, tho stime ratto. when it is desirable io throw boek the centri' to insert` another piece of work this` is rapidly :it-t'otnplishod ily grasping th(` handle 25, and lhus nt'tunting the pinion 20, suitl pinion boing, un stated, `in mesh with the rait-li 22 of lln slttvo 8. ln ih is rr-.u'wtn'd mort-nn nt oi' the parts the screw i2 slides through Lito pluglii nud ih(l Cup ii, und the spring i4 is oi' course ('omprvssed, but alter the insertion oi' ihr work lin` lover 25 is released, nud Said Spring reacts, :tud itold `tho conti-r against said work with Constant yitidinrr pressure timingy iinl entire reducing operation.

\\'i|iit` `shown :ipplitd to foot-stocks the invontion iSv not. liinittd lo tiny specilitf renter, for it nitty bo eniploytd with other kinds of renters und in turning, grinding and oliwr rodutiug iuncliinos found in various urls.

i'lniugts tti-.ty bo unido in various details ,oi the iinprovement without departure from the invention, which is not limited to tho pret-iso` devices shown and described.

Having thus described our nvoniion, what wtclaim is t i. 'lhe (-onihnntion, with a support. of a sleeve niovzthio therein; u runter rzlrritd iu' the sleeve; u spring' hearing uguiust iin` sleeve.' nud menus for odjlmtiliy.;` the Sleeve without niiet-ting.: thc tension oi'suid spring` 'iho combination. with u support, of n sleeve mounted in u boi-tI thereof; n cenlor Carried lu' lthe sleeve; n sprinf.,r hvrtrini.AA ug'zlinst tht` sleeve; und moans for adjust in"V Asaid sleeve. und .simuiluneously with streit ndjustnnni krt-ping: the tension ot iin` spring vonstuni.

2i. The conihimiiion. with u support havingr n'bore, of :l sleeve mounted in suid lloro; n Center ("airriod h r tito stoere; u holienl spring.: ltouring against Ihe sleeve; :intl

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moans for adjusting the sleeve and maintaining constant tension of said spring.

4. The combination, with n tubular support, of a sleeve mounted in the bore ot' said support; a center carried by the siervo; u sprinf.: bearing against said sleeve; an abutmont for said spring; menus for reti-acting the sleeve; 1nd menus for locklntr said sleeve in its retracted position.

5. ihe combination. with n support, of a center-carrier mounted therein, :ind having a rack; a shaft; I1 pinion on said shaft for engaging snid rack; means for lurking the shnft ngoinsi movement; and a spring carried iu' thv support. und hearing against the center carrier,

li, 'ihe combination. with n foot-stock, of a center-cnr rior mounted i'or sliding movement therein; a Spring for nriuutlng said t'cnte|"cur1ier in one direction; rent-ing for avluuiim.r said comm-Currier in the opposite direction; und moans for locking un element of Suid gearing` 'ihe continuation, with n f0ot sto k having.; an ex tension slotted io receive a toot for dressing the reduelngwheel, of n iool-rlump on Suid extension.

N: The combination, with u [oot-stork havlnpr an overimmring: arm proridud with au extension slotted to receive u tool. of a tool-clamping sert-w threaded into Suid extension4 it 'liucombination, with a fooi-stock having bores, at :in unghio euch othtr. oi" n slet-vtmounted in one ot said hores. nud inn-inf" o ravit: a enter rrarried h v the sleeve; u shaft mounted in the other bore: n. pinion carried hy snid shaft. :lud in mesh with the rui-k; :i splitlhearing through which the shaft posses; und a lcrew for vompressing.y the itt-tiring agninst snid lsilaii.

1li. 'iiit` combination, with a stock having' a insuring, of a stoere mounted in suid hearing; u cup for the sleeve hnviuu an intel-nntintin-ended wuil; a ping externallytltrentled tu engage suid wail; n key on the plug; a Screw possini: through the ping, rind havim.r a groove to receive suid hoy, snid sr'row e: waging the sleeve, and its thread heini;I of the sum@l lead os threads of the plug and cup; n htlieni spring: between the sleeve und plug; and a center carried by the sleeve.

11. lhe combination, with a stock having a bearing, of a slt-ove in said hearing; n centen' carried by the sleeve; a screw threaded into the sieero. und lmving n iongituA dinai groove; n hollow internalilyt'hrondod cap rigid with the rear end of the bearing; an externoily-threaded pingr spiined to the st'rev; and a spiriti spring between the pito,r and the end of the sleeve.

' i2. 'iiu combination, with a ecnter-currier and its eenA iet'. of s rap having an internally-threaded willi; a spiral spring hearing against the center-carrier: nud threaded devil-0s. euch having the same iod of thread for adjusting the center-carrier and the spring in consounnre with said euri-ier, whereby compression of said spring is avoided. und thetension thereof will remu'in constant.

In testimony whereof we :tifx our signatures in presence of two witnesses.

BllNG'i M. \V. HANSON. ARTHUR it). THAYIGIL Witnesses if. E. ANnhnsoN, itimmiitis iii, ilnoborrrr,

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